3v Relay Module and PIR sensor circuit troubleshoot Answered
Looking for help on my project. See image. Testing before connecting to high voltage device. Using a 3v relay triiggered by the PIR signal. As you see wired now, There is no ground wire coming from PIR. The circuit would not trigger relay with a ground wire to the PIR. When this does trigger I noticed on the relay that the LED would not go completely off. So I check to find that when relay turns "off" the PIR is still sending 2.8 volts to the relay. Not enough to trigger the relay, but enough to show power through the LED. Obviously something wrong here where the PIR or Relay are still drawing power. Can you help?